Checking device for yield spring stiffness coefficient of speed regulator of water-turbine generator set

Abstract

The utility model relates to the technical field of recording devices, and discloses a water-turbine generator set speed regulator yield spring stiffness coefficient checking device, which comprises a stiffness coefficient tester, a display is arranged on the stiffness coefficient tester, and a moving plate capable of moving left and right is arranged on the upper side wall surface of the stiffness coefficient tester. And a pressure sensor and a displacement sensor are arranged on the movable plate. In the use process, the spring to be detected is sleeved on the outer wall of the positioning column, then the movable plate moves rightwards, when the spring and the left side wall surface of the fixed plate generate pressure, the pressure sensor starts to monitor the pressure, and meanwhile, the displacement sensor detects the displacement of the positioning column, so that the stiffness coefficient of the spring can be measured; if the stiffness coefficient is small, the widening column can drive the connecting through groove to move leftwards through the hydraulic push rod, the widening column can expand the inner wall of the spring, and meanwhile the value on the displayer is observed till the value reaches the standard.

Description

Technical Field

[0001] The utility model relates to the technical field of recording devices, in particular to a calibration device for the stiffness coefficient of a yield spring of a hydrogenerator governor. Background Technique

[0002] The governor of the hydrogenerator set in a hydropower station is a mechanical feedback governor. The feedback spring installed in the yield mechanism is an important component of the governor feedback. It is necessary to periodically measure its stiffness coefficient to prevent the phenomenon of being too soft and causing fluctuations in the active load of the unit.

[0003] Currently, a stiffness coefficient tester is used for measurement. However, the existing stiffness coefficient tester can only test the spring during use and cannot adjust it. This leads to the need to move the spring to an adjustment device for adjustment after the spring is detected. Obviously, the above steps are rather cumbersome to operate and not convenient for the staff to use.

[0004] Therefore, we propose a calibration device for the stiffness coefficient of a yield spring of a hydrogenerator governor. Content of the Utility Model

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a calibration device for the stiffness coefficient of a yield spring of a hydrogenerator governor.

[0006] To achieve the above object, the utility model adopts the following technical solution. A calibration device for the stiffness coefficient of a yield spring of a hydrogenerator governor includes a stiffness coefficient tester. A display is arranged on the stiffness coefficient tester. A movable plate capable of moving left and right is arranged on the upper side wall surface of the stiffness coefficient tester. A pressure sensor and a displacement sensor are arranged on the movable plate. A positioning column capable of being limited is arranged on the right side wall surface of the movable plate. A fixed plate is fixedly installed on the upper side wall surface of the stiffness coefficient tester. An installation box body is fixedly installed on the right side wall surface of the fixed plate. The outer wall of the installation box body extends to the left side position of the fixed plate. A connection through groove capable of being limited is opened on the left side wall surface of the installation box body corresponding to the position of the positioning column. A matching limit column is movably installed inside the connection through groove. A widening column is fixedly installed on the right side wall surface of the limit column. The outer wall of the connection part of the widening column and the limit column is a conical surface that is smaller on the left and larger on the right. A hydraulic push rod for moving it left and right is arranged on the widening column. A position adjustment mechanism for moving it left and right is arranged on the movable plate. The position adjustment mechanism includes a position adjustment rod and a connection slider.

[0007] Preferably, a plurality of the positioning posts, connection through grooves and limiting posts are provided, and a plurality of widening posts and hydraulic push rods are provided. The plurality of positioning posts respectively correspond to the plurality of limiting posts one by one, and the outer diameters of the plurality of positioning posts are all different. A connection turntable is rotatably installed on the right side wall surface of the moving plate, and the outer wall of the connection turntable extends to the left side position of the moving plate. The plurality of positioning posts are all fixedly installed on the right side wall surface of the connection turntable in a detachable manner.

[0008] Preferably, the plurality of hydraulic push rods are all fixedly installed on the right side wall surface inside the installation box cavity, and the extending ends of the plurality of hydraulic push rods are respectively fixedly installed on the right side wall surfaces of the corresponding widening posts.

[0009] Preferably, the connection slider is fixedly installed on the bottom wall surface of the moving plate. The position adjusting mechanism further includes a connection chute, a connection slide rod and an auxiliary runner. The connection chute is opened on the upper side wall surface of the stiffness coefficient tester.

[0010] Preferably, the connection slider and the connection chute are adapted to each other. The connection slider is movably clamped into the inside of the connection chute. The connection slide rod is horizontally fixedly installed inside the connection chute, and the outer wall of the connection slide rod movably penetrates through the left and right wall surfaces of the connection slider.

[0011] Preferably, the position adjusting rod is rotatably installed inside the connection chute. A threaded groove is opened on the outer wall of the position adjusting rod. The position adjusting rod is threadedly connected to the connection slider. An auxiliary runner for facilitating its rotation is arranged on the outer wall of the position adjusting rod.

[0012] Preferably, the sizes of the plurality of widening posts, the plurality of limiting posts and the plurality of connection through grooves are all different, and the plurality of widening posts respectively correspond to the plurality of positioning posts one by one.

[0013] Beneficial effects

[0014] The utility model provides a device for calibrating the stiffness coefficient of the yield spring of a hydrogenerator governor. It has the following beneficial effects:

[0015] 1. For the device for calibrating the stiffness coefficient of the yield spring of the hydrogenerator governor, during the use of the utility model, the spring to be detected is sleeved on the outer wall of the positioning post. Then the moving plate moves to the right. When pressure is generated between the spring and the left side wall surface of the fixed plate, the pressure sensor starts to monitor the pressure, and at the same time, the displacement sensor detects the displacement of the positioning post. In this way, the stiffness coefficient of the spring can be measured. If the stiffness coefficient is too small, the hydraulic push rod can be used to make the widening post drive the connection through groove to move to the left. The widening post will expand the inner wall of the spring. At the same time, observe the value on the display until the value reaches the standard, which improves the practicability and is relatively convenient to use.

[0016] 2. For the calibration device of the stiffness coefficient of the yield spring of the hydro-generator governor, during the use of this utility model, by rotating the auxiliary runner, the position adjustment rod starts to rotate. Under the limiting action of the connecting slider and the connecting chute, the connecting slider starts to move, thereby realizing the change in the position of the moving plate. By the elongation or contraction of the extending end of the hydraulic push rod, the displacement of the widening column can be realized. In addition, multiple positioning columns are provided, and the outer diameters of the multiple positioning columns are different, which can position springs with various inner diameters, improving the practicability. In addition, the sizes of the multiple widening columns are different, which can widen springs with various inner diameters, improving the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the whole of this utility model;

[0018] Figure 2 is a perspective view of the stiffness coefficient tester of this utility model;

[0019] Figure 3 is a sectional perspective view of the installation box body of this utility model.

[0020] LEGEND: 1. Stiffness coefficient tester; 2. Moving plate; 3. Positioning column; 4. Fixed plate; 5. Installation box body; 6. Connecting through groove; 7. Limiting column; 8. Widening column; 9. Hydraulic push rod; 10. Connecting turntable; 11. Auxiliary runner; 12. Connecting slider; 13. Connecting chute; 14. Connecting slide bar; 15. Position adjustment rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Embodiment 1: For the calibration device of the stiffness coefficient of the yield spring of the hydro-generator governor, as shown in Figure 1 , Figure 2 and Figure 3 , it includes a stiffness coefficient tester 1. A display is provided on the stiffness coefficient tester 1. A moving plate 2 that can move left and right is provided on the upper side wall surface of the stiffness coefficient tester 1. A pressure sensor and a displacement sensor are provided on the moving plate 2. A positioning column 3 that can be limited is provided on the right side wall surface of the moving plate 2. A fixed plate 4 is fixedly installed on the upper side wall surface of the stiffness coefficient tester 1. An installation box body 5 is fixedly installed on the right side wall surface of the fixed plate 4. The outer wall of the installation box body 5 extends to the left side position of the fixed plate 4. A connecting through groove 6 that can be limited is provided on the left side wall surface of the installation box body 5 corresponding to the position of the positioning column 3. A limiting column 7 that is adapted is movably installed inside the connecting through groove 6. A widening column 8 is fixedly installed on the right side wall surface of the limiting column 7. The outer wall of the connection between the widening column 8 and the limiting column 7 is a conical surface that is smaller on the left and larger on the right. A hydraulic push rod 9 for moving it left and right is provided on the widening column 8. A position adjustment mechanism for moving it left and right is provided on the moving plate 2. The position adjustment mechanism includes a position adjustment rod 15 and a connecting slider 12.

[0022] During the use of this utility model, the spring to be detected is sleeved on the outer wall of the positioning column 3. Then, the moving plate 2 moves to the right. When pressure is generated between the spring and the left side wall surface of the fixed plate 4, the pressure sensor starts to monitor the pressure. At the same time, the displacement sensor detects the displacement of the positioning column 3. In this way, the spring stiffness coefficient can be measured. If the stiffness coefficient is too small, the hydraulic push rod 9 can be used to make the widening column 8 drive the connecting through groove 6 to move to the left. The widening column 8 will expand the inner wall of the spring. At the same time, observe the values on the display until the values reach the standard.

[0023] Embodiment 2: On the basis of Embodiment 1, as Figure 1 , Figure 2 and Figure 3 shown, a plurality of positioning columns 3, connecting through grooves 6 and limiting columns 7 are provided. A plurality of widening columns 8 and hydraulic push rods 9 are provided. The plurality of positioning columns 3 respectively correspond to the plurality of limiting columns 7 one by one. The outer diameters of the plurality of positioning columns 3 are all different. A connecting turntable 10 is rotatably installed on the right side wall surface of the moving plate 2. The outer wall of the connecting turntable 10 extends to the left side position of the moving plate 2. The plurality of positioning columns 3 are all fixedly installed on the right side wall surface of the connecting turntable 10 in a detachable manner.

[0024] The plurality of hydraulic push rods 9 are all fixedly installed on the right side wall surface inside the installation box body 5 cavity. The extending ends of the plurality of hydraulic push rods 9 are respectively fixedly installed on the right side wall surfaces of the corresponding widening columns 8.

[0025] A connecting slider 12 is fixedly installed on the bottom wall surface of the moving plate 2. The position adjusting mechanism further includes a connecting chute 13, a connecting slide rod 14 and an auxiliary runner 11. The connecting chute 13 is opened on the upper side wall surface of the stiffness coefficient tester 1.

[0026] The connecting slider 12 is adapted to the connecting chute 13. The connecting slider 12 is movably clamped into the inside of the connecting chute 13. The connecting slide rod 14 is horizontally fixedly installed inside the connecting chute 13. The outer wall of the connecting slide rod 14 movably penetrates through the left and right wall surfaces of the connecting slider 12.

[0027] A position adjusting rod 15 is rotatably installed inside the connecting chute 13. A thread groove is opened on the outer wall of the position adjusting rod 15. The position adjusting rod 15 is threadedly connected to the connecting slider 12. An auxiliary runner 11 for facilitating its rotation is provided on the outer wall of the position adjusting rod 15.

[0028] The sizes of the plurality of widening columns 8, the plurality of limiting columns 7 and the plurality of connecting through grooves 6 are all different. The plurality of widening columns 8 respectively correspond to the plurality of positioning columns 3 one by one.

[0029] During the use of this utility model, by rotating the auxiliary runner 11, the position adjusting rod 15 starts to rotate. Under the limiting action of the connecting slide rod 14 and the connecting chute 13, the connecting slider 12 starts to move, thereby realizing the change in the position of the moving plate 2. By the elongation or contraction of the hydraulic push rod 9 at the elongation end, the displacement of the widening column 8 can be realized. In addition, a plurality of positioning columns 3 are provided, and the outer diameters of the plurality of positioning columns 3 are different, which can position springs with various inner diameters, improving the practicability. In addition, the sizes of the plurality of widening columns 8 are different, which can widen springs with various inner diameters.

[0030] The above shows and describes the basic principles, main features and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of this utility model. Without departing from the spirit and scope of this utility model, this utility model will have various changes and improvements, and these changes and improvements all fall within the scope of this utility model claimed. The scope of protection claimed by this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for checking the stiffness coefficient of a yield spring of a speed governor of a hydro-turbine generator set, comprising a stiffness coefficient tester (1), the stiffness coefficient tester (1) being provided with a display, a movable plate (2) capable of moving left and right being provided on the upper side wall of the stiffness coefficient tester (1), a pressure sensor and a displacement sensor being provided on the movable plate (2), and characterized in that: A positioning column (3) capable of limiting position is arranged on the right side wall of the movable plate (2); a fixing plate (4) is fixedly installed on the upper side wall of the stiffness coefficient tester (1); a mounting box (5) is fixedly installed on the right side wall of the fixing plate (4); the outer wall of the mounting box (5) extends to the left side of the fixing plate (4); a connecting groove (6) capable of limiting position is opened at a position corresponding to the positioning column (3) on the left side wall of the mounting box (5); a matching limiting column (7) is movably installed inside the connecting groove (6); a widening column (8) is fixedly installed on the right side wall of the limiting column (7); the outer wall formed by connecting the widening column (8) and the limiting column (7) is a conical surface with a smaller left side and a larger right side; a hydraulic push rod (9) is arranged on the widening column (8) for moving it left and right; a position adjustment mechanism for moving it left and right is arranged on the movable plate (2); the position adjustment mechanism comprises a position adjustment rod (15) and a connecting slider (12).

2. The device for checking the yield spring stiffness coefficient of a speed governor of a hydro-turbine generator set according to claim 1, characterized in that: The positioning posts (3), connecting grooves (6) and limiting posts (7) are provided in plurality, the widening posts (8) and hydraulic push rods (9) are provided in plurality, the plurality of positioning posts (3) correspond to the plurality of limiting posts (7) one by one, the outer diameters of the plurality of positioning posts (3) are different, the right side wall of the movable plate (2) is rotatably mounted with a connecting turntable (10), the outer wall of the connecting turntable (10) extends to the left side of the movable plate (2), and the plurality of positioning posts (3) are fixedly mounted on the right side wall of the connecting turntable (10) in a detachable manner.

3. The device for checking the yield spring stiffness coefficient of a speed governor of a hydro-generator set according to claim 1, characterized in that: The plurality of hydraulic push rods (9) are fixedly mounted on the right side wall surface of the cavity of the mounting box (5), and the extended ends of the plurality of hydraulic push rods (9) are respectively fixedly mounted on the right side wall surface of the corresponding widening column (8).

4. The device for checking the yield spring stiffness coefficient of a speed governor of a hydro-turbine generator set according to claim 1, characterized in that: The connecting slide block (12) is fixedly mounted on the bottom wall of the movable plate (2), and the position adjustment mechanism further comprises a connecting slide groove (13), a connecting slide rod (14) and an auxiliary rotating wheel (11), and the connecting slide groove (13) is arranged on the upper side wall of the stiffness coefficient tester (1).

5. The device for checking the yield spring stiffness coefficient of the speed governor of a hydro-generator set according to claim 4 is characterized in that: The connecting slider (12) and the connecting slide groove (13) are adapted to each other, the connecting slider (12) is movably inserted into the interior of the connecting slide groove (13), the connecting slide rod (14) is fixedly installed in the interior of the connecting slide groove (13) in a horizontal state, and the outer wall of the connecting slide rod (14) movably penetrates the left and right wall surfaces of the connecting slider (12).

6. The device for checking the yield spring stiffness coefficient of the speed governor of a hydro-generator set according to claim 5, characterized in that: The position adjustment rod (15) is rotatably mounted inside the connecting slide groove (13); a thread groove is provided on the outer wall of the position adjustment rod (15); the position adjustment rod (15) and the connecting slide block (12) are threadedly connected together; and an auxiliary rotating wheel (11) is provided on the outer wall of the position adjustment rod (15) to facilitate its rotation.

7. The device for checking the yield spring stiffness coefficient of a speed governor of a hydro-generator set according to claim 1, characterized in that: The sizes of the plurality of widening columns (8), the plurality of limiting columns (7) and the plurality of connecting through slots (6) are all different, and the plurality of widening columns (8) correspond one-to-one to the plurality of positioning columns (3).

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